Muffler.



BEST AVAILABLE P. J. COLLINS.

MUFFLER.

APPLIGATION FILED APRJG, 1913. 1,067,468, Patented July 15, 1913.

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Q'vbbymoocO BEST AVA OP UNITED STATES PATENT OFFICE.

PATRICK J. COLLINS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO AMERICANSILENCER COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OFDELAWARE.

MUFFLER.

Specification of Letters Patent.

Patented July 15, 1913.

Application filed April 16, 1913. Serial No. 761,522.

To all whom z'tmay concern Be it known that I, PATRICK J. COLLINS,

citizen of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Mufilers, of which the following is aspecification.

This invention relates to a mufiier for silencing the exhaustfrominternal combustion engines and the purpose of-the invention is toprovide a device of this kind which will be inexpensive to construct andassem ble and which will'be effective in operation.

In the accompanying drawing, which illustrates my invention, Figure 1 isa central longitudinal section through the mufiler; and Figs. 2, 3, 4,and 5 are transverse sections through the same on the lines 22, 33, H,and 5-5, respectively of Fig. 1.

Referring to the drawing, A indicates the mufiler as a whole, comprisinga preferably cylindrical inclosing casing 1, having heads 2 and 2"* atits ends, provided with inlet and outlet ports 3 and 8*, respectively,the former port adapted to be connected to the exhaust pipe of aninternal combustion engine. These heads have spiders I on their innersides and they are connected together and clamped against the ends ofthe casing by a bolt 5 which extends centrally through the casing andthrough the hubs 4 of the spiders.

Spaced apart from one another, at'suitable intervals throughout thelength of the casing, and secured to its inner wall, are bafliingpartitions 6, 7 8, and 9. Four partitions are shown in the drawing, butthe number may be varied, according to the size of the mufller. Thesepartitions have openings or ports therethrough, indicated at 6 7 8*, and9 respectively, each opening being eccentric to the longitudinal axis ofthe casing and preferably of circular form. The successive openings areangularly displaced with respect to one another about the axis of thecasing, and preferably this angular displacement is progressive from oneend of the series to the other, so that the arrange ment of the entireseries of openings is spiral. Thus, in the muffler shown in the drawing,having four partitions, it will be seen that the successive openings 6,7 8 and 9 are arranged progressively 90 degrees apart, so that the gasestraveling through the mufllcr must necessarily partake of a whirlingmotion.

The bolt 5 forms a central support for a series of battling members 10,ll, 12, and 13, in the form of disks of smaller diameter than theopenings or ports in the partitions. These disks, it will be seen, arealternately arranged with respect to the partitions, and they are inline with the openings in said partitions, so that the gases, passingthrough the muffler cannotflow directly from port to port in thepartitions, but will be deflected by the central battling members, whichare in line with said ports, and caused to partake o f thewhirlingmotion due to the spiral arrangement of the ports or openings in thepartitions. The disks 10-13 are preferably of such diameter that, whenthey are secured to the central supporting rod, the

'latter, with the disks attached, can be passed through the openings inthe partitions, which accordingly facilitates the work of assembling.

In assembling the mutiler, the partitions are secured within the casingand the disks are secured tothe rod 5. One end of this rod is thenconnected to the head 2, and the rod with the disks uponit is passedthrough the openings in the partitions, the head 2 then fitting againstthe casing. The 0pposing head 2 is then placed on the opposite end ofthe rod and secured thereto in any suitable way, and the two heads arethus clamped tightly against the ends of the casing and the mutller isthen ready for use.

What I claim is:

1. A mutller comprising an inclosing casing a series of spaced bafiiingpartitions in said casing, each partition having an eccentric openingtherethrough, and a series of bafiiing members of smaller diameter thansaid openings alternately arranged with re spect to said partitions andin line with said openings.

2. A muffler comprising an inclosing casing a series of spaced battlingpartitions in said casing, each partition having an eccentric openingtherethrough and the open ings in the successive partitions beingangularly displaced with respect to one another about the axis of thecasing, and a series of battling members of smaller diameter than saidopenings alternately arranged with re spect to said partitions and inline with said openings centric opening therethrough, a supportextending through said openings, and a series of bathing members ofsmaller diameter than said openings secured to said support andalternately arranged with respect to said partitions.

4. A mufller comprising an inclosing casing a series of spaced battlingpartitions in said casing, each partition having an eccentric openingtherethrough and the openings in the successive partitions beingangularly displaced with respect to one another about the axis of thecasing, a support extending through said openings, and a series ofbafiiing members of smaller diameter than said openings secured to saidsupport and alternately arranged with respect to said partitions.

5. A mufller comprising an inclosing BEST AVAILABLE COP;

casing a seriesof spaced battling partitions in said casing, eachpartition having an eccentric opening therethrough and the openthroughsaid openings, and batliing disks or members secured to said supportbetween the partitions.

6, A. muitier comprising an inclosing casing a series of spaced battlingpartitions in said casing, each partition having an eccentric openingtherethrough, and a series of bathing members of smaller diameter thansaid partitions alternately arranged with respect: to said partitionsand in line with said openings.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

PATRICK J. COLLINS.

Witnesses:

FRANCIS I. MALonn, MARCIA B. MAXWELL.

copies of i p k ni yp q taine ql fiy e; each, by addressing theCommissioner of Patents,

